CN102154573A - Accurate die-casting molding process for aluminum silicon carbide - Google Patents
Accurate die-casting molding process for aluminum silicon carbide Download PDFInfo
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- CN102154573A CN102154573A CN 201110073859 CN201110073859A CN102154573A CN 102154573 A CN102154573 A CN 102154573A CN 201110073859 CN201110073859 CN 201110073859 CN 201110073859 A CN201110073859 A CN 201110073859A CN 102154573 A CN102154573 A CN 102154573A
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Abstract
The invention relates to an accurate die-casting molding process for aluminum silicon carbide, which comprises the following steps of: putting aluminum ingots into a rotating crucible heating furnace, heating to 500-600 DEG C, preserving heat while vacuumizing to 0.1-10 Pa, continually heating to 680-780 DEG C and preserving heat until the aluminum ingots are molten completely; adding silicon carbide with the granularity of 1,000-2,500 meshes into molten aluminum liquid under a vacuum condition and uniformly stirring with a stirring device; removing gas and impurities by using ultrasonic waves generated by an ultrasonic generator; and quantitatively injecting molten aluminum silicon carbide from the crucible heating furnace into an ordinary or vacuum die-casting machine and performing accurate die-casting on parts. The accurate die-casting molding process for the aluminum silicon carbide, disclosed by the invention, has the advantages of short molding time, good product quality and high production efficiency; and an effective measure is provided for the mass production of aluminum silicon carbide parts.
Description
Technical field
The present invention relates to a kind of microdiecast moulding process of aluminium silicon carbide material.
Background technology
The aluminium silicon carbide material has light weight, rigidity height, thermal expansivity is little, thermal conductivity is high, the geometric accuracy good stability, have multiple advantages such as certain toughness, physical strength is moderate concurrently, become all kinds of mcms and high-current power module (as the IGBT module) ideal base material, and the ideal material of the spare and accessory parts that all kinds of quality are little, intensity is high (as the aviation part), industrial water requirement is big." osmose process " adopted in the preparation of existing aluminium silicon carbide material usually, and its detailed process is: use particular adhesive that carbofrax material is pressed into bulk or fabricated part shape earlier, form the inner prefabricated component that the carbofrax material in a lot of spaces is arranged; With the aluminium ingot fusion, obtain aluminium aqueous fusion liquid then, under effects such as vacuum, ultrasonic wave, aluminium water is watered on the silicon carbide prefabricated component,, allow aluminium water infiltrate in the silicon carbide prefabricated component from top to bottom, finally obtain the aluminium silicon carbide part by the effect of gravity, ultrasonic wave etc.The moulding process of existing osmose process aluminium silicon carbide part or material, molding time is long, and production efficiency is low, is not suitable for producing in enormous quantities the aluminium silicon carbide part.
Summary of the invention
The applicant has carried out research and has improved at above-mentioned problem, and a kind of aluminium silicon carbide microdiecast moulding process is provided, and molding time is short, good product quality, and the production efficiency height provides effective means for producing the aluminium silicon carbide part in enormous quantities.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of aluminium silicon carbide microdiecast moulding process comprises the steps:
Step 1, put into aluminium ingot in rotary crucible process furnace, be heated to 550 ~ 600 ℃ of insulations, be evacuated to 0.1 ~ 10Pa in the time of insulation, finish and continue to be heated to 680 ~ 780 ℃ after vacuumizing, insulation is melted fully until aluminium ingot;
Step 2, under vacuum condition be that the silicon carbide of 1000 orders ~ 2500 purpose powdered adds in the molten aluminum liquid, use whipping appts to stir, silicon carbide powder is uniformly dispersed in aluminium liquid granularity;
Step 3, when stirring, use ultrasonic generating unit to produce the ultrasonic wave of 24.0 ~ 30.0kHz, utilize action of ultrasonic waves to remove gas and impurity, and make silicon carbide powder refinement more, be uniformly dispersed;
Step 4, then the aluminium silicon carbide liquation is quantitatively injected in common or the vacuum die casting machine from the crucible process furnace, carry out the microdiecast of part;
After step 5, the part cooling, stripping forming.
Further:
The granularity of described silicon carbide is at 1500 orders ~ 2000 orders.
Technique effect of the present invention is:
A kind of aluminium silicon carbide microdiecast moulding process disclosed by the invention, molding time is short, good product quality, the production efficiency height provides effective means for producing the aluminium silicon carbide part in enormous quantities; Simultaneously, in the process of preparation aluminium silicon carbide liquation, use gas and impurity in the ultrasonic wave removing liquation, promote the effect of removing gas and impurity.
Description of drawings
Fig. 1 is the structural representation of the crucible process furnace that adopts in the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, be the structural representation of the rotary crucible process furnace that adopts in the embodiments of the invention, wherein, 1-crucible, 2-ULTRASONIC COMPLEX whipping appts, 3-aluminium aqueous fusion liquid, 4-control circuit passage, 5-ultrasonic generator, 6-carborundum powder adding set, 7-liquid outlet, 8-body of heater.ULTRASONIC COMPLEX whipping appts 2 is in the process of preparation aluminium silicon carbide liquation, and stir on one side, sends ultrasonic wave by ultrasonic generator 5 on one side, is used for removing the gas and the impurity of aluminium silicon carbide liquation.
Embodiment 1,
The aluminium ingot of getting volume and be 150 * 150 * 100mm places the crucible process furnace, is heated to 570 ℃ of insulations, is evacuated to 5Pa, finishes and continues to be heated to 720 ℃ after vacuumizing, and insulation is melted fully until aluminium ingot; With granularity is in the silicon carbide adding molten aluminum liquid of 1800 purpose powdered, open the ULTRASONIC COMPLEX whipping appts, crucible rotates with the speed of 10r/min, 3 ~ 5 ULTRASONIC COMPLEX whipping apptss send the ultrasonic wave that frequency is 27kHz simultaneously, continued to stir removing gas and impurity 7 ~ 8 minutes, treat that impurity floats or precipitation is complete and silicon carbide powder is uniformly dispersed in aluminium liquid after, liquation is quantitatively injected the two drift microdiecast machines of horizontal cold pressing chamber, and interior outer ram uses the pressure of 10MPa and 15MPa to carry out the precision pressure casting respectively behind the matched moulds; After the work-piece cools, stripping forming.
Embodiment 2,
The aluminium ingot of getting volume and be 150 * 150 * 100mm places the crucible process furnace, is heated to 600 ℃ of insulations, is evacuated to 0.1Pa, finishes and continues to be heated to 780 ℃ after vacuumizing, and insulation is melted fully until aluminium ingot; With granularity is in the silicon carbide adding molten aluminum liquid of 1000 purpose powdered, open the ULTRASONIC COMPLEX whipping appts, crucible rotates with the speed of 10r/min, 3 ~ 5 ULTRASONIC COMPLEX whipping apptss send the ultrasonic wave that frequency is 24kHz simultaneously, continued to stir removing gas and impurity 7 ~ 8 minutes, treat that impurity floats or precipitation is complete and silicon carbide powder is uniformly dispersed in aluminium liquid after, liquation is quantitatively injected the two drift microdiecast machines of horizontal cold pressing chamber, and interior outer ram uses the pressure of 10MPa and 15MPa to carry out the precision pressure casting respectively behind the matched moulds; After the work-piece cools, stripping forming.
Embodiment 3,
The aluminium ingot of getting volume and be 150 * 150 * 100mm places the crucible process furnace, is heated to 550 ℃ of insulations, is evacuated to 10Pa, finishes and continues to be heated to 680 ℃ after vacuumizing, and insulation is melted fully until aluminium ingot; With granularity is in the silicon carbide adding molten aluminum liquid of 2500 purpose powdered, open the ULTRASONIC COMPLEX whipping appts, crucible rotates with the speed of 10r/min, 3 ~ 5 ULTRASONIC COMPLEX whipping apptss send the ultrasonic wave that frequency is 30kHz simultaneously, continued to stir removing gas and impurity 7 ~ 8 minutes, treat that impurity floats or precipitation is complete and silicon carbide powder is uniformly dispersed in aluminium liquid after, liquation is quantitatively injected the two drift microdiecast machines of horizontal cold pressing chamber, and interior outer ram uses the pressure of 10MPa and 15MPa to carry out the precision pressure casting respectively behind the matched moulds; After the work-piece cools, stripping forming.
Claims (2)
1. an aluminium silicon carbide microdiecast moulding process is characterized in that comprising the steps:
Step 1, put into aluminium ingot in rotary crucible process furnace, be heated to 550 ~ 600 ℃ of insulations, be evacuated to 0.1 ~ 10Pa in the time of insulation, finish and continue to be heated to 680 ~ 780 ℃ after vacuumizing, insulation is melted fully until aluminium ingot;
Step 2, under vacuum condition be that the silicon carbide of 1000 orders ~ 2500 purpose powdered adds in the molten aluminum liquid, use whipping appts to stir, silicon carbide powder is uniformly dispersed in aluminium liquid granularity;
Step 3, when stirring, use ultrasonic generating unit to produce the ultrasonic wave of 24.0 ~ 30.0kHz, utilize action of ultrasonic waves to remove gas and impurity, and make silicon carbide powder refinement more, be uniformly dispersed;
Step 4, then the aluminium silicon carbide liquation is quantitatively injected in common or the vacuum die casting machine from the crucible process furnace, carry out the microdiecast of part;
After step 5, the part cooling, stripping forming.
2. according to the described aluminium silicon carbide microdiecast of claim 1 moulding process, it is characterized in that: granularity 1500 orders ~ 2000 orders of described silicon carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110073859 CN102154573A (en) | 2011-03-25 | 2011-03-25 | Accurate die-casting molding process for aluminum silicon carbide |
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| CN 201110073859 CN102154573A (en) | 2011-03-25 | 2011-03-25 | Accurate die-casting molding process for aluminum silicon carbide |
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| CN102154573A true CN102154573A (en) | 2011-08-17 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091685A (en) * | 2016-06-14 | 2016-11-09 | 重庆瑞方渝美压铸有限公司 | Die casting electric melting furnace |
| CN107447163A (en) * | 2017-09-08 | 2017-12-08 | 大连理工大学 | The apparatus and method that industry casts live ultrasonication molten iron |
| CN111519059A (en) * | 2020-05-14 | 2020-08-11 | 湖南太子新材料科技有限公司 | Method for preparing high-performance aluminum-based silicon carbide |
| CN111604246A (en) * | 2020-05-11 | 2020-09-01 | 国网电力科学研究院武汉南瑞有限责任公司 | Preparation method of insulating operating rod with replaceable nano modified aluminum alloy hardware fitting head |
| CN113290245A (en) * | 2021-05-25 | 2021-08-24 | 江南大学 | Process for preparing metal-based ceramic composite material by secondary pressure application |
| CN114850440A (en) * | 2022-05-19 | 2022-08-05 | 华中科技大学 | Spoke casting mold, vacuum die-casting forming system and spoke manufacturing method |
| CN114959409A (en) * | 2022-04-19 | 2022-08-30 | 西安石油大学 | Preparation method of particle-reinforced indium-free soluble aluminum-based composite material |
| CN115141951A (en) * | 2022-08-08 | 2022-10-04 | 河南瀚银光电科技股份有限公司 | Method for preparing high-performance aluminum-based silicon carbide |
| CN115637354A (en) * | 2022-09-16 | 2023-01-24 | 湖南省大禹科技发展有限公司 | Forming method and forming equipment for rare earth aluminum carbon silicon brake disc |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2278696Y (en) * | 1996-08-15 | 1998-04-15 | 陈昭威 | Power supersonic smelting furnace for mfg. silicon carbide particle reinforced aluminium alloy composite |
| CN1482265A (en) * | 2003-07-29 | 2004-03-17 | 哈尔滨工业大学 | Pressure casting method for controllable volume percent SiCp/Al composite material |
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2011
- 2011-03-25 CN CN 201110073859 patent/CN102154573A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2278696Y (en) * | 1996-08-15 | 1998-04-15 | 陈昭威 | Power supersonic smelting furnace for mfg. silicon carbide particle reinforced aluminium alloy composite |
| CN1482265A (en) * | 2003-07-29 | 2004-03-17 | 哈尔滨工业大学 | Pressure casting method for controllable volume percent SiCp/Al composite material |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091685A (en) * | 2016-06-14 | 2016-11-09 | 重庆瑞方渝美压铸有限公司 | Die casting electric melting furnace |
| CN107447163A (en) * | 2017-09-08 | 2017-12-08 | 大连理工大学 | The apparatus and method that industry casts live ultrasonication molten iron |
| CN111604246A (en) * | 2020-05-11 | 2020-09-01 | 国网电力科学研究院武汉南瑞有限责任公司 | Preparation method of insulating operating rod with replaceable nano modified aluminum alloy hardware fitting head |
| CN111519059A (en) * | 2020-05-14 | 2020-08-11 | 湖南太子新材料科技有限公司 | Method for preparing high-performance aluminum-based silicon carbide |
| CN113290245A (en) * | 2021-05-25 | 2021-08-24 | 江南大学 | Process for preparing metal-based ceramic composite material by secondary pressure application |
| CN113290245B (en) * | 2021-05-25 | 2022-04-19 | 江南大学 | Process for preparing metal-based ceramic composite material by secondary pressure application |
| CN114959409A (en) * | 2022-04-19 | 2022-08-30 | 西安石油大学 | Preparation method of particle-reinforced indium-free soluble aluminum-based composite material |
| CN114850440A (en) * | 2022-05-19 | 2022-08-05 | 华中科技大学 | Spoke casting mold, vacuum die-casting forming system and spoke manufacturing method |
| CN115141951A (en) * | 2022-08-08 | 2022-10-04 | 河南瀚银光电科技股份有限公司 | Method for preparing high-performance aluminum-based silicon carbide |
| CN115637354A (en) * | 2022-09-16 | 2023-01-24 | 湖南省大禹科技发展有限公司 | Forming method and forming equipment for rare earth aluminum carbon silicon brake disc |
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Application publication date: 20110817 |